CN202870344U - Optical fiber coupling lens capable of changing center thicknesses of lenses in lens groups - Google Patents
Optical fiber coupling lens capable of changing center thicknesses of lenses in lens groups Download PDFInfo
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- CN202870344U CN202870344U CN 201220406504 CN201220406504U CN202870344U CN 202870344 U CN202870344 U CN 202870344U CN 201220406504 CN201220406504 CN 201220406504 CN 201220406504 U CN201220406504 U CN 201220406504U CN 202870344 U CN202870344 U CN 202870344U
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Abstract
The utility model discloses an optical fiber coupling lens capable of changing the center thicknesses of lenses in lens groups, which comprises an outer sleeve and at least four lens groups arranged inside the outer sleeve, wherein two lens groups, which are a front lens group and a back lens group, are respectively arranged at the front part and the back part of the outer sleeve; a first middle lens group and a second middle lens group are arranged between the front lens group and the back lens group; a positioning assembly for positioning the lens group is respectively arranged between the radial periphery of each lens group and the outer sleeve; the center thicknesses of lenses in the first middle lens group, the second middle lens group and the back lens group are all 2mm; the center thicknesses of lenses in the front lens group are 2.98mm; the back part of the outer sleeve is provided with a pressure ring; the inner diameter of the pressure ring is smaller than the diameter of the back lens group; and four supporting screws for adjusting the centers of the lens groups are arranged outside at least one positioning assembly. With the optical fiber coupling lens capable of changing the center thicknesses of lenses in lens groups, images can be observed and judged conveniently, the central adjustment function is provided, the cable core of an optical cable can be accurately captured, and detection on the coupling matching degree of the optical fiber can be conveniently realized.
Description
Technical field
The utility model relates to a kind of fiber coupling device, relates in particular to a kind of coupling fiber camera lens that changes mirror group lens center thickness.
Background technology
Along with the progress of science and technology, optical fiber is as transmission medium and sensing element and used in large quantities.Various optical fiber come across different application scenarios.Therefore also more and more paid attention to by people for the detection of optical fiber.In the application process of any fibre system, a major issue all must considering is the low-loss connecting method between the optical fiber, to guarantee that luminous power in the fiber core can be effectively be coupled in the fibre core of an other optical fiber by the junction.The mechanical registeration error is the subject matter that two optical fiber produce when connecting.Because the core diameter of multimode optical fiber only has 50～100 μ m usually, if having the mechanical registeration error between the so thin optical fiber then the butt coupling loss that will produce luminous power.In the practice, the general existence axially aligns error, as shown in Figure 1; Alignment error radially, as shown in Figure 2; The theta alignment error, as shown in Figure 3.In practice, how to improve the coupling fiber degree, become the important topic of the fibre system products such as optical fiber splicer.
The utility model content
Technical problem to be solved in the utility model is for above-mentioned the deficiencies in the prior art, provide a kind of with spherical aberration, thereby the fiber core energy that camera lens is captured forms the coupling fiber camera lens of the change mirror group lens center thickness of the image that can conveniently observe and judge.The coupling fiber camera lens of this change mirror group lens center thickness also has the center adjustment function, can catch accurately the fibre core of optical fiber, conveniently realizes the coupling fiber matching degree.
For solving the problems of the technologies described above, the technical scheme that the utility model is taked is: a kind of coupling fiber camera lens that changes mirror group lens center thickness, comprise overcoat and be arranged at least four interior arrangement of mirrors groups of overcoat, wherein two mirror groups are arranged on respectively the front and rear of overcoat, being front lens group and rear mirror group, is mirror group in the mirror group and second in first between front lens group and the rear mirror group; Be equipped with the positioning component for the positioning mirror group between the radially side face of every arrangement of mirrors group and the overcoat; It is characterized in that: in described first in the mirror group, second center thickness of the lens in mirror group and the rear mirror group be 2mm, the center of lens thickness of described front lens group is 2.98mm.The coupling fiber camera lens of this change mirror group lens center thickness is by the center thickness of change mirror group lens, but compensated optical fiber focuses on the negative spherical aberration that forms, thereby forms the image that can conveniently observe, judge.
As the further improved technical scheme of the utility model, the rear portion of described overcoat is provided with trim ring, and the internal diameter of described trim ring is less than the diameter of rear mirror group.Trim ring is used for fixing and the rear mirror group in location.
As the further improved technical scheme of the utility model, at least one positioning component outside is provided with four fastening nails that are used for the adjusting mirror group switching centre, between described fastening nail and the overcoat for being threaded, and described fastening nail passes overcoat, the lower outside that is positioned at a positioning component that corrects of each fastening nail, during the rotation fastening nail, the front end of fastening nail can withstand positioning component; Described four fastening nails are evenly distributed on the same axial circular side face of overcoat.Rotation fastening nail, the relative overcoat of fastening nail are done straight line turnover motion, when screwing fastening nail, positioning component is pressed on fastening nail front end top, so just can the adjusting mirror group by fastening nail, make a mirror group axially, the footpath upwards aims at, also reduce even avoid angular error.
As the further improved technical scheme of the utility model, described mirror group is four groups, wherein respectively is provided with four fastening nails with the corresponding positioning component of two arrangement of mirrors groups of centre outside.
As the further improved technical scheme of the utility model, also comprise case ring, described case ring is arranged on the overcoat outside surface by screw thread, and the rotary decorative circle can make the relative overcoat of case ring axially do straight reciprocating motion.
The utility model changes the coupling fiber camera lens of mirror group lens center thickness by the center thickness of change mirror group lens, but compensated optical fiber focuses on the negative spherical aberration that forms, thereby forms the image that can conveniently observe, judge; The utility model just can the adjusting mirror group by fastening nail, make a mirror group axially, the footpath upwards aims at, also reduce even avoid angular error.In a word, the utility model can conveniently be observed and judge image, has the center adjustment function, can catch accurately the fibre core of optical fiber, thus the convenient detection that realizes the coupling fiber matching degree.
Description of drawings
Fig. 1 be simple optical fiber produce when connecting axially align the error schematic diagram.
The radially alignment error schematic diagram that Fig. 2 produces when being the simple optical fiber connection.
The theta alignment error schematic diagram that Fig. 3 produces when being the simple optical fiber connection.
Fig. 4 is the image that conjugation is practised physiognomy when not increasing mirror group lens center thickness.
Fig. 5 is the spherical aberration curve map when not increasing mirror group lens center thickness.
Fig. 6 increases actual image of practising physiognomy behind the mirror group lens center thickness among the embodiment 1.
Fig. 7 is the spherical aberration figure behind the increase mirror group lens center thickness among the embodiment 1.
Fig. 8 is the coupling fiber lens construction schematic diagram that changes mirror group lens center thickness among the embodiment 1.
Below in conjunction with accompanying drawing embodiment of the present utility model is described further.
Embodiment
Referring to Fig. 8, the coupling fiber camera lens of this change mirror group lens center thickness, comprise overcoat 1 and at least four arrangement of mirrors groups 2 that are arranged in the overcoat 1, wherein two mirror groups 2 are separately positioned on the front and rear of overcoat 1, being front lens group 2-1 and rear mirror group 2-2, is mirror group 2-4 among the mirror group 2-3 and second in first between front lens group 2-1 and the rear mirror group 2-2; Be equipped with the positioning component 3 for positioning mirror group 2 between the radially side face of every arrangement of mirrors group 2 and the overcoat 1; In described first among the mirror group 2-3, second center thickness of the lens among mirror group 2-4 and the rear mirror group 2-2 be 2mm, the center of lens thickness of described front lens group 2-1 is 2.98mm.The rear portion of described overcoat 1 is provided with trim ring 5, and the internal diameter of described trim ring 5 is less than the diameter of rear mirror group 2-2.Trim ring 5 is used for fixing and the rear mirror group 2-2 in location.At least one positioning component outside is provided with four fastening nails 6 that are used for adjusting mirror group 2 centers, between described fastening nail 6 and the overcoat 1 for being threaded, and described fastening nail 6 passes overcoat 1, the lower outside that is positioned at a positioning component 3 that corrects of each fastening nail 6, during rotation fastening nail 6, the front end of fastening nail 6 can withstand positioning component 3; Described four fastening nails 6 are evenly distributed on the same axial circular side face of overcoat 1.Rotation fastening nail 6, fastening nail 6 relative overcoats 1 are done straight line turnover motion, when screwing fastening nail 6, positioning component 3 is pressed on fastening nail 6 front ends top, so just can adjusting mirror group 2 by fastening nail 6, make each mirror group 2 axially, the footpath upwards aims at, also reduce even avoid angular error.
Described mirror group 2 is 4 groups, and wherein two arrangement of mirrors groups, the 2 corresponding positioning component outsides with the centre respectively are provided with four fastening nails 6.Wherein front lens group 2-1 is convex lens, and rear mirror group 2-2 is concave mirror and convex lens combination, and two middle mirror groups 2 also are the combination of concave mirror and convex lens.In the present embodiment, be fixedly connected with by a glue or gel between each mirror group 2 and the positioning component 3; Air layer in the overcoat 1 is through measuring, and is less on the actual imaging impact of coupling fiber camera lens.Certain described mirror group 2 also can be 6 groups, 8 groups, 10 groups or more groups.Also comprise case ring 7, described case ring 7 is arranged on overcoat 1 outside surface by screw thread, and rotary decorative circle 7 can make case ring 7 relative overcoats 1 axially do straight reciprocating motion.
The center of lens thickness of the front lens group 2-1 of the coupling fiber camera lens of this change mirror group lens center thickness has increased 0.98mm, but compensated optical fiber focuses on the negative spherical aberration that forms, and can reach to change the effect that differs, thereby form the image that can conveniently observe, judge.Differing the result who usually causes is to make desirable point look like to become the spot picture, says that from another angle energy disperses not converge, and is not suitable for observing, judging.So can disperse by keeping certain differing the energy of image planes central authorities.As shown in Figure 4, image when not increasing mirror group lens center thickness is comparatively concentrated, and having increased the image of the conjugated image surface behind the 0.98mm, the center of lens thickness of front lens group 2-1 produced variation, compensate optical fiber and focused on the negative spherical aberration that forms, as shown in Figure 6, its energy distribution situation can form the image that can conveniently observe, judge as can be known.Then, by image analyzer the light ray energy with spherical aberration is analyzed, to judge shape and the center of optical fiber.Come the optical fiber energy is analyzed by a software in the present embodiment, the image shows that forms is on computer screen, although optical fiber light does not out change, but energy is distributed in by forming spherical aberration behind this change mirror group lens center thickness moral coupling fiber camera lens, thereby change has occured, spherical aberration curve map when not forming spherical aberration and spherical aberration numerical tabular are shown in Fig. 5 and table 1, and the spherical aberration figure behind the center of lens thickness of increase front lens group 2-1 and spherical aberration numerical tabular are shown in Fig. 7 and table 2; During analysis, as shown in Figure 6, software analysis energy out has three crests, a main peak, and two secondary peaks with information such as main peak symmetries, are judged shape and the center of optical fiber by secondary peak.
Table 1: spherical aberration numerical tabular
Table 2: spherical aberration numerical tabular
Claims (5)
1. coupling fiber camera lens that changes mirror group lens center thickness, comprise overcoat (1) and be arranged at least four interior arrangement of mirrors groups (2) of overcoat (1), wherein two mirror groups (2) are separately positioned on the front and rear of overcoat (1), being front lens group (2-1) and rear mirror group (2-2), is mirror group (2-4) in the mirror group (2-3) and second in first between front lens group (2-1) and the rear mirror group (2-2); Be equipped with the positioning component (3) for positioning mirror group (2) between the radially side face of every arrangement of mirrors group (2) and the overcoat (1); It is characterized in that: in described first in the mirror group (2-3), second center thickness of the lens in mirror group (2-4) and the rear mirror group (2-2) be 2mm, the center of lens thickness of described front lens group (2-1) is 2.98mm.
2. the coupling fiber camera lens of change mirror group lens center thickness according to claim 1, it is characterized in that: the rear portion of described overcoat (1) is provided with trim ring (5), and the internal diameter of described trim ring (5) is less than the diameter of rear mirror group (2-2).
3. the coupling fiber camera lens of change mirror group lens center thickness according to claim 1 and 2, it is characterized in that: at least one positioning component (3) outside is provided with four fastening nails (6) that are used for adjusting mirror group (2) center, between described fastening nail (6) and the overcoat (1) for being threaded, and described fastening nail (6) passes overcoat (1), the lower outside that is positioned at a positioning component (3) that corrects of each fastening nail (6), during rotation fastening nail (6), the front end of fastening nail (6) can withstand positioning component (3); Described four fastening nails (6) are evenly distributed on the same axial circular side face of overcoat (1).
4. the coupling fiber camera lens of change mirror group lens center thickness according to claim 3, it is characterized in that: described mirror group (2) is 4 groups; Wherein respectively be provided with four fastening nails (6) with the corresponding positioning component of two arrangement of mirrors groups (2) of centre outside.
5. the coupling fiber camera lens of change mirror group lens center thickness according to claim 3, it is characterized in that: also comprise case ring (7), described case ring (7) is arranged on overcoat (1) outside surface by screw thread, rotary decorative circle (7) can make the relative overcoat (1) of case ring (7) axially do straight reciprocating motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220406504 CN202870344U (en) | 2012-08-16 | 2012-08-16 | Optical fiber coupling lens capable of changing center thicknesses of lenses in lens groups |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220406504 CN202870344U (en) | 2012-08-16 | 2012-08-16 | Optical fiber coupling lens capable of changing center thicknesses of lenses in lens groups |
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| Publication Number | Publication Date |
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| CN202870344U true CN202870344U (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220406504 Expired - Lifetime CN202870344U (en) | 2012-08-16 | 2012-08-16 | Optical fiber coupling lens capable of changing center thicknesses of lenses in lens groups |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109471266A (en) * | 2018-12-12 | 2019-03-15 | 武汉凌云光电科技有限责任公司 | A kind of adjustment device that round light beam is transformed into oval-shaped beam |
-
2012
- 2012-08-16 CN CN 201220406504 patent/CN202870344U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109471266A (en) * | 2018-12-12 | 2019-03-15 | 武汉凌云光电科技有限责任公司 | A kind of adjustment device that round light beam is transformed into oval-shaped beam |
| CN109471266B (en) * | 2018-12-12 | 2021-06-25 | 武汉凌云光电科技有限责任公司 | Adjusting device for converting circular light beam into elliptical light beam |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130410 |